Injured Cubs slugger Kyle Schwarber probably isn’t going anywhere this summer, as Gordon Wittenmyer of the Chicago Sun-Times reports. President of baseball operations Theo Epstein gave strong signals that he’s got little interest in seeing Schwarber return from his knee injury in another uniform. While there’s always plenty of posturing this time of year, Epstein certainly made clear that there’s a higher-than-usual barrier to a trade involving the catcher/outfielder.

Here’s more from the NL Central:

The Brewers are winding up for what looks to be an important trade deadline, as MLB.com’s Adam McCalvy reports. Milwaukee has several notable names that rate amongst the top twenty trade candidates this summer, but few represent straightforward decisions. GM David Stearns says that “the calls have picked up over the last week to ten days,” though it’s “still largely informational.” Right now, the club is getting a feel for the teams it is looking to target in reaching agreements over the coming month. “You try to get a sense of what other clubs are doing, where you might have fits, so you can begin to do additional target work on certain target organizations,” says Stearns. “At this point, we feel well-prepared in terms of organizations we’re likely to have serious discussions with.”

Selling was never in the plans for the Pirates, but the club increasingly looks to be in a tough spot — in no small part due to the struggles of lefty Francisco Liriano, who owns a 5.33 ERA with 9.0 K/9 and 5.9 BB/9 on the year. Manager Clint Hurdle tells John Perrotto of the Beaver County Times that Liriano is still failing to command the ball with consistency. “Sometimes, it’s hard to pitch when you aren’t feeling the way you’ve felt when you’ve had success,” Hurdle said. “We’re going to continue to peel back the layers and try to push through this. We’ll continue to look at video. We’ll see if we can find some answers.” We have heard at least some suggestion that there’d be interest around the league in the talented lefty, who had turned in three-straight stellar campaigns heading into 2016. But he’s owed $13MM both this year and next, and surely any acquiring team would be looking for a buy-low opportunity.

2:16pm: Then again, Joel Sherman of the New York Post hears a deal is indeed near. (Twitter link.)

2:05pm: Ackert’s source now tells her a deal is “definitely in the works” but is “not close to being done.” (Twitter link.)

2:02pm: The Mets are “closing in” on a deal for Walker, Kristie Ackert of the New York Daily News reports (via Twitter).

1:00pm: It appears that the Pirates are targeting starting pitching in any deal for Walker, according to a series of reports.

Jon Niese of the Mets is one name that has come up in talks as a “possible return” for Walker, Bill Brink of the Pittsburgh Post-Gazette reports on Twitter. He’s owed $9MM for the coming season, which is close to Walker’s expected cost, and can also be controlled via successive $10MM and $11MM options.

As for the Angels, it’s not clear which of several possible players could make the most sense. Mike DiGiovanna of the Los Angeles Times suggests on Twitter that Hector Santiago would make for a “good fit” in Pittsburgh, but I’d have to think the Bucs would need to add to Walker to pry him free. Meanwhile, Rob Biertempfel of the Pittsburgh Tribune-Review notes in a tweet that C.J. Wilson could be a part of a trade, though he notes that the Halos would have to add cash for that to line up.

Meanwhile, the Nationals do have interest but it is “nothing serious,” per MLB.com’s Bill Ladson (via Twitter).

11:35am: The Angels are also among the teams with strong interest, according to reports from Mike DiGiovanna of the Los Angeles Times (via Twitter) and Rob Biertempfel of the Pittsburgh Tribune-Review (Twitter link). The Dodgers also have interest, he adds, though it’s not as significant.

11:22am: The Nationals have joined the Mets with interest in Pirates second baseman Neil Walker, Jon Heyman of CBSSports.com reports on Twitter. Both teams heavily pursued Ben Zobrist in free agency and are now apparently looking at backup options.

Given that the division rivals were said to be looking at Zobrist primarily as a second baseman, Walker represents a less-versatile, less-accomplished, but younger alternative. The 30-year-old is also a switch hitter, though he’s been far better against righties than lefties. He’s never put up the numbers that Zobrist has at the plate, but does own a strong .272/.338/.431 career batting line.

Walker is quite a different asset from Zobrist, though, as he’s only under team control for one more season. MLBTR projects that he could command $10.7MM through the arbitration process.

Pittsburgh also had talks with the Orioles, Rob Biertempfel of the Pittsburgh Tribune-Review tweets, but those discussions were ended when they failed to develop any traction.

Despite very public statements indicating that the team is all in on 2015, the Orioles are now giving “serious consideration” to selling, Jon Morosi of FOX Sports reports on Twitter. As Ken Rosenthal of FOX Sports notes (Twitterlinks), Baltimore owner Peter Angelos has previously been disinclined to authorize such a move, but that could change (at least in theory) with several of the team’s better players set to reach free agency. Of course, executive vice president Dan Duquette said on Wednesday that his club will be a buyer. But a sweep at the hands of the division-leading Yankees has certainly impacted the team’s chances of making a run at the AL East.

Here’s more from the division:

The Blue Jays remain in “active discussions” with the White Sox about right-hander Jeff Samardzija, according to Jon Paul Morosi of FOX Sports (Twitter link). The Jays have been said to have “strong” interest in adding Samardzija, a potential free agent at the end of the season. Upgrading the pitching staff is the Blue Jays’ top priority in the week leading up to the trade deadline, and Samardzija, whose eight-inning gem on Thursday dropped his ERA to 3.91, would certainly do that. Over his past eight outings, Samardzija has a 2.55 ERA, and he’s lasted at least seven innings in each of those contests. As Peter Gammons pointed out earlier today on Twitter, for a team with bullpen woes in addition to rotation troubles, adding a pitcher that is capable of effectively working deep into games should carry even greater appeal.

If the Tigers do end up selling, the Blue Jays will have interest in closer Joakim Soria, tweets Anthony Fenech of the Detroit News. Soria would be a pure rental, as he’s a free agent at the end of the year. He’s earning $7MM and has posted an even 3.00 ERA with 7.8 K/9 and 2.5 BB/9 in his 39 innings this season, though he’s also had an unusually difficult time with home runs, which could make pitching at the Rogers Centre a challenge.

The Blue Jays’ pursuit of Scott Kazmir illustrates that it’s “becoming more clear” that the team is open to a rental acquisition, writes Shi Davidi of Sportsnet. Davidi notes that the Kazmir talks were never going to get off the ground based on the asking price — “think Jeff Hoffman or Daniel Norris,” says Davidi — especially considering Kazmir’s injury scares. Health concerns are another reason to wonder if the Blue Jays will seriously pursue Johnny Cueto or not, he adds. While the Blue Jays may be warming to the idea of a rental arm, they can’t afford to have their acquisition miss any time, and Cueto’s had a pair of minor elbow issues in 2015.

While the Blue Jays made a “big push” to land Carlos Carrasco from the Indians, according to Ken Rosenthal of FOX Sports (Twitter link), the trade simply “didn’t get done.” Cleveland isn’t necessarily motivated to trade a starter, though they’re also not entirely ruling out the possibility.

The Yankees have shown at least some interest in Marlins righty Mat Latos, Joe Frisaro of MLB.com reports on Twitter. They join a growing list of clubs that have shown some inclination to take a chance on Latos’s resurgence and past success. New York has given public indication that it is not lining up any major moves, but it would be surprising if it does not at least make a few acquisitions at areas of need, and rotation depth could certainly make sense.

MONDAY, 10:44pm: Vogelsong is in Houston presently, tweets Mark Berman of FOX 26. He declined comment on his situation with the club, per Berman.

6:07pm: Vogelsong is a “realistic option,” but nothing is expected to be wrapped up tonight, Drellich tweets.

5:40pm: The Astros are in “serious discussions” with free agent righty Ryan Vogelsong, sources tell Ken Rosenthal of FOX Sports (via Twitter). Evan Drellich of the Houston Chronicle reported earlier today that Houston was not done with its roster, noting that a pitching addition was possible and that Vogelsong was a player the club had confirmed interest in.

Houston added some rotation depth today by dealing for a package that included former MLB starter Dan Straily. But the team is obviously still looking for innings.

Vogelsong, 37, has been a steady presence at the back of the Giants’ bullpen since re-emerging with a stunning season back in 2011. Though his results have been up and down, he has averaged 164 frames per year of 3.74 ERA ball, to go with a 3.92 FIP on the back of 7.0 K/9 and 3.0 BB/9. And it is worth noting both that Vogelsong has posted fairly consistent regular season velocity figures (and was able to amp up his fastball into the mid-90s during the postseason.

The Giants were the runners up in the pursuit of Yasmany Tomas, who earlier today reportedly agreed to terms with the Diamondbacks, according to a Jeff Passan of Yahoo Sports (via Twitter). For their $68.5MM, Arizona is getting a player with undeniable upside, ESPN.com’s Jerry Crasnick writes after speaking with three scouting sources.

The Padres are receiving a “ton of inquiries” on backstops Yasmani Grandal, Rene Rivera, and Austin Hedges, according to a tweet from Ken Rosenthal of FOX Sports. Each member of that trio has his own particular appeal, along with factors that hold down their trade value.

In other Padres news, Rosenthal notes (Twitterlinks) that he has received additional confirmation that San Diego had engaged with talks on Matt Kemp with the Dodgers. He hastens to add that these discussions were not “that recent” and that nothing is close to getting done, as the Friars continue to turn over a number of rocks in search of upgrades after missing on Pablo Sandoval and Tomas. Los Angeles would presumably have interested in arms and catching were talks to move forward.

The Giants will indeed seek to apply the money they hoped to spend on Sandoval or Tomas toward another top-end free agent, John Shea of the San Francisco Chronicle reported this morning (before the Tomas signing was reported). As reported yesterday, the club is opening a broad search for a way to bolster its roster, aided by a bloated purse from winning the team’s third World Series in five seasons.

12:22pm: The Astros and Tigers have had “preliminary trade contact” regarding backstops, according to a report from Jon Morosi of FOX Sports (via Twitter). The report indicates that the discussion involves the possibility of a catcher moving from Houston to Detroit.

The Tigers, of course, have reportedly expressed a willingness to listen on their own incumbent behind the dish, Alex Avila. The left-handed-hitting veteran, still just 27 years old, has battled concussions of late and has seen his offensive production decline from a 2011 peak. Bryan Holaday and the rising James McCann are also factors in Detroit’s backstop mix.

In the first trade of the offseason, the Braves shed $5MM of payroll when they shipped Derek Lowe to the Indians and agreed to pick up $10MM of his $15MM salary for 2012. It was a deal that gave GM Frank Wren & Co. some much needed breathing room, and one that couldn't have been made without a good deal of pitching depth.

Wren claims to be content with his stockpile of arms and even though interest in Jurrjens is high, the GM is reportedly asking for a Zack Greinke-like return for the oft-injured 25-year-old. While the Braves could come away with a solid package for Jurrjens, it's overly optimistic to put the youngster's value on a par with Greinke's.

The Braves are looking to make a few upgrades in their lineup and would like to move on from shortstop Alex Gonzalezif they can. They'd also like to land themselves a young center fielder as insurance if they can't retainMichael Bourn when he hits the open market after next season. Wren would obviously love to keep Jurrjens as part of the starting five, but he can absolutely afford to flip him in order to improve elsewhere.

A week ago I kicked off a discussion among MLBTR writers about how many true ace starting pitchers there are in baseball. I was surprised to find that my own off-the-cuff list totaled 18, with another eight falling into my "borderline" group. My list of aces, in no particular order:

Recently, there was a great deal of speculation as to how the Marlins would take care of the third base job as prospect Matt Dominguezwas demoted to the minors to improve his offense. However, Larry Beinfest seemed to put that talk to rest when he said that the trade front was rather quiet, leavingDonnie Murphy as the club's Opening Day starting third baseman.

Unfortunately for the Marlins, Dominguez suffered a slight fracture to his left elbow yesterday and Murphy was struck on his surgically-repaired right hand by a pitch in the seventh inning of tonight's contest against the Mets. Dominguez should be back in action in 4-6 weeks but there is no word on Murphy's condition just yet. If the Fish find themselves without Murphy's services for an extended period of time, they can refer back to their shortlist of third base candidates from just weeks ago. We could hear names like Michael Young rehashed again, but with a $16MM annual salary, it's not likely that the Marlins and Rangers can match up. Fortunately for the Marlins, a couple of the more affordable options are newly available.

The Marlins flirted with the idea of bringing in Royals veteran Pedro Feliz in March. On Sunday, Feliz asked for, and was granted, his release. Though it was said at the time at the Marlins weren't likely to sign the 35-year-old, circumstances may bring about a change of heart in the Florida front office. Former Marlin Luis Castillo has also re-entered the open market after being cut loose by the Phillies. Castillo could theoretically be put at his preferred position, second base, with Omar Infantebeing moved over to third. Even though neither player would represent an earth-shattering signing, either player would be able to keep the spot at third warm until Dominguez recovers and gets his bat up to speed.

It's also quite possible that the Marlins would once again fill the void at third base internally. After all, as Beinfest said, whoever they would acquire to play the position would be nothing more than a "placeholder".

Recently, after learning ofJason Castro's season-ending injury, Astros owner Drayton McLane reportedly decided that the club could allocate extra money to find a backstop for 2011. It remains to be seen exactly how much funding the team is willing to put towards the catcher position, especially since Houston doesn't seem poised to contend this season and whoever they acquire will be simply keeping the spot warm for Castro.

There are plenty of catchers on the block, such as Pittsburgh's Ryan Doumit. Doumit could fit the bill as a one-year solution, though he will take in $5.6MM on the year when including the $500K buyout of his remaining years. The Astros' first choice to step in for Castro was Twins catcher Drew Butera, but they were quickly rebuffed. Nationals backstop Jesus Flores reportedly drew interest from GM Ed Wade but the club is said to have cooled on him in recent days. The 26-year-old has appeared healthy in Spring Training but Houston is still wary of his surgically repaired right shoulder.

While it seems that Wade won't take advantage of the Nats' glut at the catcher position, he could look elsewhere to find a club with a backstop to spare. We've yet to hear of the Astros reaching out to the Angels about one of their catchers, but it would make an awful lot of sense for them to make an inquiry.

While Jeff Mathisis in position to be the club's Opening Day catcher, Bobby Wilson is looking good in Spring Training – both literally and figuratively. The soon-to-be 28-year-old dropped 33 pounds at the behest of manager Mike Scioscia and seems likely to take the No. 2 position on the depth chart, in part because he's out-of-options. With youngster Hank Conger waiting in the wings, it would make sense for the Halos to clear a path for the up-and-coming prospect by dealing from a position of strength. Wilson could obviously be had for less than Mathis, but both catchers have affordable contracts and it's unlikely that either one would be termed "untouchable".